White On Black Setting

So, i was playing with my friends ipod touch 3g and his has a setting called white on black and it pretty much switches everything to the opposite color. Like from white to black. I have an iPod touch 2g and i dont see this setting. Is there something that i can get that would do the same thing from cydia?

i unlocked that settings in 3.0 but there was nothing in it (iPod Touch 2G). so its more than just a settings modification.

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Well, it needs more than just a N45AP.plist mod. The accessibility features require AXRuntime.bundle, and libaccessibilities.dylib. You also need system frameworks and accesibility bundles, along with a Preferences.app mod.